docs: def things(random=random, *args, **kwargs):
      """
      Return a set of things.
  
      >>> mock_random.seed(0)
      >>> things(random=mock_random)
      'two secrets, two secrets, and two secrets'
      >>> mock_random.seed(1)
      >>> things(random=mock_random, capitalize=True)
      'A Mighty Poop, A Mighty Poop, And A Mighty Poop'
  
      """
      return inflectify.join([a_thing(random=random), a_thing(random=random), a_thing(random=random)])